The effect of polyvinylpyrrolidone ( PVP ) on thermochemical reaction of Cu 2 SnS 3 nanoparticles: Shape and opto-crystalline structure

Yazdani, Ahmad; Shadrokh, Zohre; Hussein, Hussein Maaallah

doi:10.1016/j.mssp.2018.01.020

Cited by 7 publications

(1 citation statement)

References 30 publications

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“…Nevertheless, the diffraction peaks for all Ni x Mn 1‐x Co 2 O 4 samples reveal the shift of 2θ values to lower angles, corresponding with Ni doping contents (Figure1(b)). The crystal structure of Ni‐doped MnCo 2 O 4 samples is analyzed from main peak diffraction peaks using the Scherrer's equation [33] (Eq. (1)), revealing the increase in average crystal size with Ni contents (See SI, table S1).…”

Section: Resultsmentioning

confidence: 99%

Defect Engineered Ni Doped MnCO₂O₄ Spinel Acts as Effective Bifunctional Electrocatalyst for Rechargeable Zinc‐Air Batteries

Khamsanga,

Khampuanbut,

Kheawhom

et al. 2023

ChemCatChem

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Herein, an effective strategy using defect engineering promoted by Ni atom doping on MnCo2O4 is proposed for bifunctional catalytic activities of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). A series of NixMn1‐xCo2O4 with x=0, 0.1, 0.2, and 0.3 is hydrothermally synthesized. Tuning the electronic structure by Ni‐doped MnCo2O4 results in modulating the valence states by dominating Mn4+ / Co3+ with the increase of oxygen vacancies. At optimized Ni content, Ni0.2Mn0.8Co2O4 reveals activity toward ORR with a current density of −1.02 mA cm‐2 at 0.95 V (vs. RHE), a high electron transfer number of 3.536, and the highest half‐wave potential of 0.855 V, which is comparable to Pt/C. For OER, Ni0.2Mn0.8Co2O4 demonstrates the lowest overpotential of 503 mV to achieve a current density of 10 mA cm−2. Additionally, rechargeable zinc‐air batteries (RZABs) with Ni0.2Mn0.8Co2O4 catalyst demonstrate a capacity of 808.6 mA h g−1 at 1.0 mA cm−2 with power densities of 459 mW cm−2 at 675 mA cm−2. The improved binding strength (Mn−O/Co−O bond) and the enhanced stability by Ni atom doping in MnCo2O4 for ORR/OER is proved by ex‐situ FT‐EXAFS. This work highlights defect engineering on Ni‐doped MnCo2O4 used as bifunctional ORR/OER catalysts for high‐performance RZABs.

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Section: Resultsmentioning

confidence: 99%

Defect Engineered Ni Doped MnCO₂O₄ Spinel Acts as Effective Bifunctional Electrocatalyst for Rechargeable Zinc‐Air Batteries

Khamsanga,

Khampuanbut,

Kheawhom

et al. 2023

ChemCatChem

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Construction of visible-light photocatalysts through bandgap engineering

Bhojan,

Sebastian

2024

Advanced Functional Materials and Methods for Photodegradation of Toxic Pollutants

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Effect of substituting the ionic radius in the structural and optoelectrical properties of spin-coated thin film synthesized by solvothermal method

Hussein

Sharifi

Yazdani

2021

Optik

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The effect of polyvinylpyrrolidone ( PVP ) on thermochemical reaction of Cu 2 SnS 3 nanoparticles: Shape and opto-crystalline structure

Cited by 7 publications

References 30 publications

Defect Engineered Ni Doped MnCO₂O₄ Spinel Acts as Effective Bifunctional Electrocatalyst for Rechargeable Zinc‐Air Batteries

Defect Engineered Ni Doped MnCO₂O₄ Spinel Acts as Effective Bifunctional Electrocatalyst for Rechargeable Zinc‐Air Batteries

Construction of visible-light photocatalysts through bandgap engineering

Effect of substituting the ionic radius in the structural and optoelectrical properties of spin-coated thin film synthesized by solvothermal method

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The effect of polyvinylpyrrolidone ( PVP ) on thermochemical reaction of Cu 2 SnS 3 nanoparticles: Shape and opto-crystalline structure

Cited by 7 publications

References 30 publications

Defect Engineered Ni Doped MnCO2O4 Spinel Acts as Effective Bifunctional Electrocatalyst for Rechargeable Zinc‐Air Batteries

Defect Engineered Ni Doped MnCO2O4 Spinel Acts as Effective Bifunctional Electrocatalyst for Rechargeable Zinc‐Air Batteries

Construction of visible-light photocatalysts through bandgap engineering

Effect of substituting the ionic radius in the structural and optoelectrical properties of spin-coated thin film synthesized by solvothermal method

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Product

Resources

About

Defect Engineered Ni Doped MnCO₂O₄ Spinel Acts as Effective Bifunctional Electrocatalyst for Rechargeable Zinc‐Air Batteries

Defect Engineered Ni Doped MnCO₂O₄ Spinel Acts as Effective Bifunctional Electrocatalyst for Rechargeable Zinc‐Air Batteries